Wong Voon Hee UTAR   Universiti Tunku Abdul Rahman, Sungai Long Campus Jalan Sungai Long, Bandar Sungai Long, Cheras Kajang, Selangor 43000 Malaysia   wongvh@utar.edu.my             JEL Areas: C1 : Econometric and Statistical Methods: General C5 : Econometric Modeling: General